Combined level and plumb.



y G. W. CASWELL & C. E. WELT.

COMBINED LEVEL PL APPLICATION man .15,l

Patented Jan. 18, 1916.

2 SHEETS-SHEET-I.

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G. W. oAsvL/ELL L c. E. WELT.

COMBINED LEVEL/.AND PLUMB.

APPLICATION FILED SEPT. L5, 1915.

'Patented J an. 18, 1916.

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2 SHEETS-SHEET 2.

wh/Leased able push buttons arranged for such purside plate for the battery box removed, Fig.`

GEORG-E W. CASWELL AND CHARLES E. WELT, 0F CLIFTONDALE, MASSACHUSETTS.

L COMBINED LEVEL AND PLUME.

` Specification of Letters latent.

rammed aan. is, 191e.

Application filed September 15, 1915. Serial No, 50,862.

To all whom it may concern:

Be it known that we, GEORGE W. CAswELL and CHARLES E. WELT, citizens of the United States, residing at Cliftondale, Saugus, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Combined Levels and Plumbs, of which the following is a specilication.

This invention relates to a combined level and plumb.

A The primary object of the invention is to provide a device of this class with an especially constructed dry battery wherein the center carbon electrode is projectedbeyond the opposite ends of the body, each of said electrodes having a bulb arranged thereon, a contact plate being arranged upon the body at the zinc of the battery electrode, contact vInembersbeing arranged above the plate and adapted to be forced into Contact with the said plate bythe pressure of suittion, combination and arrangement of parts set forth in the following speciication and falling within the scope of the appended claims.

In the drawings: Figure 1 is a side elevation ofa level and plumb provided with our improvement, Fig. 2 is a top plan View of the same, Fig. 3 is a transverse sectional view approximately on the line 3--3 of Fig. 1, Fig. 4 is a detail side elevation with the 5 isa central longitudinal sectional view approximately on the line 5-5 of Fig. 2, Fig. 6 is a perspective view of the battery, Fig. 7 is a similar'view of one of the bulbs with the reflector thereon.

The devicev comprises the usual stock 1, the same having arranged in suitable cavities or side openings provided therefor the level glass bubble-containing bulb 2 and the plumb bubble-containing bulb or tube 3,' the bubbles of each of the bulbs being perceptible through openings provided lin suitable covering plates l and 5 respectively, and the glass bulbsrmay be adjusted or regulated in any desired Orpreferred manner so as to center the bubbles therein. The stock 1 is approximately centrally provided with a substantially rectangular opening which communicates with one of its sides and within the said opening isarran ed a metallic box or casing 6, the same pre erably having its outer sides flanged and formed with threaded openings, whereby a closure plate 7 may be removably connected with the said box or casing 6.

The box 6 is adapted to receive a removable metal battery box, indicated by the numeral 8, and this box, in the showing of the drawings, comprises two sections 9 and 9 respectively, each of said sections being connected to the inner .face of the box through the medium of removable elements such as screws 10. The box 8 is arranged centrally of the plumb 3 and said box is adapted to receive a removable battery'1l,.

vbody 12.

The numeral 14 designates a contact plate which is arranged upon the body and which communicates with the zinc of the battery electrode, and the projecting ends of the carbon electrode have connected thereto lamps 15 and 16 respectively, the lamp 16 being disposed centrally or directly opposite the bubble in the bulb 2, while the lamp 16 is likewise disposed to the rear centrally of the bubble in the bulb 3. The contact plate 14 is arranged between the sections 9-9 of the battery box 8, and connected with each of the said sections are spring contact members 17 and 18` respectively.

The stock 1 is provided with a pair of pushbuttons 19 and 20 respectively, each of the said push buttons including a flanged portion 21 which is arranged within an annular depression 22 provided in asleeve or casing 23, and the said flanges are contacted by springs24 which surround the buttons 19 and 20, forcing the buttons in' an outward direction from the spring contacts 17 and 18, but not beyond the surface of the stock.

Each of the lamps 15 and 16 is provided with a (lished or cup-shaped reector 25 and 26 respectively, and it is, of course, to be uns .derstood that the stock is provided with suitable cavities or depressions to receive the bulbs of the lamps 15 and 16 as well as the lVith a battery constructed in acl -be apparent that either of the spring contact4 members 17 or 18 lis forced into engagement with the contacty plate 14 of the battery, either of the lamps 15 or 16 'may be illuminated, andfurther that should both yof the .pushbuttons 19 and QO-be operated at kthe same time to bring the contact springs 17 and 18 into engagement with the contacty plate 14, lboth of the lamps 15 and 16 will be ysimultaneously illuminated.

ranged one in each of the sight openings-andl vi sible from the exterior of the stock, a lamp adjacent each of the bulbs,a single battery for both of the lamps, said battery including a body having its center carbon electrode projecting beyond the ends and connected with ythe lamps, a contact plate communicatj ing with the zinc of the battery electrode,

spring Contact vmembers arranged adjacent the Contact plate, and a push button for each of the said ycontact springs. p

2. In a device of the class described, the

' rcombination of a supporting stock. having bubble tubes therein visible'from the extel f `30 receptacle, a box Within the receptacle, L

rior of the stock, said stock having a central closure to one side of thestock for the box,

- a battery box removablyy secured in the irst named box, said battery box comprising. two 7 sections, a longitudinally arranged battery removably secured in the battery box, said n battery comprising an outer zinc casing, a

carbon electrode which is surrounded-` by the zinc casing and Whichextends centrally of the casing and projects throughthe opposite ing, a Contact spring carried by each of the'` sections of the battery box and disposed above the contact plate, a push button for eachof'the springs, a lamp connected with each of the ends of the center carbon or `electrode, a reflector for eachl of the lamps, and

each of said lamps being disposed adjacent one of the bubble tubes. g

In testimony whereof We aiiix our signatures in presence of two Witnesses.-

GEORGE vv. CASWELL; f

CHARLES E. WELT. Witnesses: f L

ELDoRA A. BISBEE, Erma. M. Dow.

40 ends thereof, a contact plate upon the casrf' 

